commit skill

Commit

Create clean, well-structured git commits that tell a coherent story.

Process

1. Assess the Working Tree

Run git status (never -uall) and git diff to understand what changed. Also run git log --oneline -5 to match the repo's existing commit message style.

If there are no changes, say so and stop.

2. Group Changes by Intent

Look at the changed files and mentally group them:

• Feature: new functionality (client + server + tests for the same feature = one commit)
• Fix: bug fixes
• Refactor: structural changes that don't change behavior
• Docs: documentation-only changes (CLAUDE.md, README, comments)
• Test: test-only additions or changes
• Chore: config, dependencies, tooling

Rules for grouping:

• Prefer fewer commits. A feature that touches 15 files is still one commit if it's one logical change.
• Only split when intent is genuinely different. "Add collaborative editing" is one commit even if it touches client, server, DB, and tests. But "add collaborative editing" + "fix unrelated CSS bug" should be two commits.
• For a first commit or large initial build, one commit is fine. Don't artificially split an initial implementation.
• Docs updates that accompany code changes go in the same commit. Only separate docs commits for docs-only changes.

3. Present the Plan

Before committing, show the user:

• How many commits you plan to make
• For each commit: the message and which files are included
• Ask for confirmation

4. Create the Commits

For each commit:

1. Stage the specific files with git add ... (never git add -A or git add .)
2. Commit with a message using this format:

<type>: <concise description>

<optional body — explain WHY, not WHAT. The diff shows what.>

Co-Authored-By: Claude <noreply@anthropic.com>

Types: feat, fix, refactor, docs, test, chore

Message guidelines:

• Subject line under 72 characters
• Use imperative mood ("add", not "added" or "adds")
• The subject should complete the sentence "This commit will..."
• Body is optional — use it for non-obvious context (e.g., "the old approach caused X" or "this unblocks Y")
• Always include the Co-Authored-By trailer

5. Verify

After all commits, run git log --oneline -10 to show the result.

Safety Rules

• Never commit .env, credentials, or secrets. Check staged files for these patterns and warn.
• Never use git add -A or git add . — always stage specific files.
• Never amend a commit unless the user explicitly asks.
• Never force push.
• Never skip hooks (--no-verify).
• If a pre-commit hook fails, fix the issue and create a NEW commit (don't amend). To diagnose, read the pre-commit hook (.husky/pre-commit or .pre-commit-config.yaml) to see what it runs, then run each command individually to find the failure.

What NOT To Do

• Don't write commit messages that describe every file changed. The diff does that.
• Don't split a single feature across 5 commits just because it touches 5 directories.
• Don't use vague messages like "update code" or "fix stuff".
• Don't commit generated files (db/schema.ts, dist/, nodemodules/, pycache__/).